Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bd1a770e5bd3a7b…

MALICIOUS

PDF

43.6 KB Created: 2020-11-04 09:40:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 32aa690da7f515758ad7099b0d889418 SHA-1: 1c7ada17b12fb791f9cca77d9abfcda79f057143 SHA-256: 1bd1a770e5bd3a7be7175a8dcbf11719e9ad8c07a069759552020bb0c804b58a
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious Link

The PDF contains a lure for a 'furniture row online payment center' and embeds multiple links, including one to a known malicious redirector. The ML classifier and critical heuristics strongly indicate credential phishing and a link farm, suggesting the document's primary purpose is to redirect users to malicious sites. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://vuvonuzomuvi.weebly.com/uploads/1/3/4/5/134508102/9202760.pdf.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://gettraff.ru/aws?keyword=furniture+row+online+payment+center In PDF document text
    • https://vuvonuzomuvi.weebly.com/uploads/1/3/4/5/134508102/9202760.pdfIn PDF document text
    • https://pigogokeda.weebly.com/uploads/1/3/1/8/131857695/pulod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367000/normal_5f8d989103829.pdfIn PDF document text
    • https://xepolilibud.weebly.com/uploads/1/3/4/5/134591261/lenige.pdfIn PDF document text
    • https://xotukejurivaj.weebly.com/uploads/1/3/4/0/134016857/dixenifibobaritebok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387712/normal_5f8edf5eb3866.pdfIn PDF document text
    • https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/vinoganazoxelikesuv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/degerutisig/57677459537.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/one_big_party_icivics_answer_key_worksheet_page_2.pdfIn PDF document text
    • https://s3.amazonaws.com/sikuva/assess_the_validity_of_this_statement_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/80107935100.pdfIn PDF document text
    • https://s3.amazonaws.com/gebukil/deciduous_forest_animals_list.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/broadcast_media_in_nigeria.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/caballo_de_troya_saga_completa.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/apx_alarm_panel_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/ginutu/autofill_not_working_edge_browser.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A0A 5052 bytes
SHA-256: f3ffef6fb716e7f53cd526e08e8a94cbdbd55db81ff2978a8188e6e293db2376
font_01_sfnt_off00007b3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B3E 11192 bytes
SHA-256: 0c9203df9258a880db28feacb5394e00ab9d257c690b4c6112e6195ed2fce3f6

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